1/75 HP 1550 RPM 115V 3.3" Dia. CCW Rotation Nutone Bath Fan Motor Fasco Motor # D637 1/75 HP 1550 RPM, .50 amps, 115V; CCW Rotation Shaft End 3.3" Diameter Motor; Shaft = 1/4" x 1-3/16" Motor case length = 2"; 2 studs on back for mounting Supplied With 6", 2-Prong Plug; Air Over Motor 1 Year Manufacture Warranty